Shaft thrust lock



Dec l' L. J. SCHEBEN SHAFT THRUST LOCK Fild NOV. 2. 1921 `"PatentedDevc. -`1, 19257,`

i sHAFnTHnUsT Lock.v

Appiipatierr inea' November 2, 1921. serial 110.512,335.

rTo all whom tv/may concern:

Be it known that I,- LAURENC 'SCHE- Y BEN, a citizen of the ,UnitedStates, residing at Dayton, in the Acounty of Montgomery and State ofvOhio, have invented "ce'rtain new and Yuseful"Improvements in Shaftv`Thrust Locksof which the following is a speciication. 4 e' U f --Thislinvention relates tov gun mounts and more particularly tov that type ofgun mount used'jon'airplanes; f i' `f 'The objectof `thisinventionvijs'to provide l a gunmount Vof the kind above set forth witha locking means that will lprevent end thrust removalof vthe stem of agun mount fork fromthe support socketof ka gun 'turret." Anotherobjectfoffthis'invention resides inthe provisionof av locking means yfor the stem ofy a gun mount Vfork which includes an indicating means asto whether j orl 'not the stem is or is not locked in V the socket of agun turret.A

' lVith the above andvother objectsiin view,`

' the'invention consists in the novel construction, combination andarrangement' herein fully described, illustrated and claimed.

In the drawings:

Figure 1 is a side elevation of a gunk mount assembly, the stem of whichis shown invertical section; e

Figure 2 is a rear elevation of agun mount assembly showingtheinventionk ap- 'vide'd with a latch 14, the locking por-tionV ,of whichextends an appreciable distance below the lower end of the stem 11.These latches are ksecured tof the springs 12'by means of the rivets 15andv allow for the movementy of the springs and latches tov a vpositionas shown in Figure 1. The stem 11 .is provided with apertures Iintowhich the heads of the several rivets may be received when the latchesare in a locking position'.

The upper ends ofthe latches 14 are Vrenlarged 'to provide innerinclinedv edges 16,

i each terminating in a straight edge portion vv17 providing abutmentlshoulders 181f'for ya purpose'to be hereinafter set forth.'f'j fr y Adisc 191s` fi'Xedly secured to gtheflower end ofthe" stem 11 and has,portions 4cut awaytherefrom as .a1-.2O to allow forthe movement of thedependingv portions of the 'latches 14. Slidablefinv an aperture 21'formed in the disc, 19 is val plunger rod Q22 'n .LAURENCE J.scHEBEN,or-inavron, omo.

having atits upper end a plunger"23 Vand at Iits llower end 'aycollar24.y An expansijble 'coilspring 25 iswvoundabout the plunger rod22 and one` end thereof Iis engagedwith vthe under face of'theplunger23y andas its I opposite enclin engaged .against the fdisc 19 itnormally urges thel plunger l122 upwardlyy jin "the stem 11.v Theplunger"23 is'preffe'rably ymade integrally with the plunger rod 22.However, the collar 24 on the lower endof the said rod is detachable toallow for the l assembly of the device.

Inl operation, assuming vthe device in Aits unlocked position, as shownin Figure 2, the springs 12 normally urge the latches 14 inwardly andtherefore the device would be ink i i this position when inserted inther support` socket. After the insertion of the stem 11 soV in thesocket 26 the collar 24 4is manually i moved upwardly, andl because ofthe wedg-y ing action of kthe plunger 23 and the .indclined edges V16,thelatches are spread to asl,

sume a locked position, as shown inFigure 1, vthus securely engaging thesocketand ren i Y y The collar 24 is positioned between the dependingpor-vtaining the stem in the same.

tions of the latches when thek same are spread, therefore providing asecondary means of preventing thev inward movement Y of the latches.-After inserting the stem,if,

for any reason, the plunger kwould move downwardly and thus allow thelatches'to move inwardly and thereby become dis engaged from the socket,this could easily come into view of the operator. e

It will be seen from the. foregoing that a locking device for the stemof a gun mount p 1 i fork in the supportsocket of va gun 'turret hasbeenprovided whichV insuresposliti-ve latching of the stemin the socketwhile also` allowing for the Veasy removal of the samer whenv desired.Thedevice alsoprovides a dual means to prevent the accidental; in- Y i*lbe perceived because vrthe collar 24-would obviously be positionedbelow the ring and .1"00 n member insert-able into the socket member,

the latch member comprising a pair of latches, and a longitudinallymovable A.spring-pressed device 'engageable with the latches for urgingthe latches to latching position.

2. A latching device for a `gun mount, comprising in combination, asocket member carried bythe gunturret, and a latch member insertableinto the socket member, the latch member comprising a pair of latches,and a longitudinally movable springpressed device 'enga-geable with eachlatch at two longitudinally separated points, for urging the latches tolatching position.

3. In a device of the kind described, a receivingv member, a memberadapted for detachable placement in said receiving member, a lockingmeans, including spring latches, provided with inclined inner edges, amovable plunger adapted for engagement with said inclined edges to urgesaid latches outwardly and means for manually moving said plungeragainst said edges for the purpose .set forth.

4. In a device of the kind described, a receiving member, a memberadapted for detachable placement in said receiving member, having springlatches adapted to engage said receiving member, inclined edges on theupper ends of said latches, a plunger adapted for engagement with saidinclined edges to urge `said latches outwardly and a collar in rigidconnection with said plunger for engagement with said latches to retainthe same in a spread position.

In testimony whereof I have afxed vmy y sign ature.

LAURENCE J. scHEBEN.

